| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 4 | |
| #2 | Belgium | 1 | |
| #3 | Brazil | 1 | |
| #4 | Switzerland | 1 | |
| #5 | Spain | 1 | |
| #6 | Finland | 1 | |
| #7 | France | 1 | |
| #8 | United Kingdom | 1 | |
| #9 | Norway | 1 | |
| #10 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Packaging and shipping | |
| #3 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Ships | |
| #2 | Cranes | |
| #3 | Swimming pools |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ludwig Werner | 5 |
| #2 | Ludwig W | 2 |
| #3 | Clemens Wilhelm | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE2461047A1 | Rig for ship boom type derrick - has fixed running section and slewing tackle connected separately to which (NL220676) | |
| GB1428693A | Derrick tackle gear for ships | |
| DE2334557A1 | Loading boom rigging for ships | |
| DE2334111A1 | Mast for wires or lighting - consists of a conical tube into which is inserted one or more slit tubes of equal conicity | |
| DE2245315A1 | Loading boom rigging for ships |